Small documentation update

.github/workflows/docs.yml

@@ -0,0 +1,31 @@
+name: docs
+on:
+  push:
+  pull_request:
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.11'
+      - uses: actions/checkout@v3
+      - run: python -m pip install .[docs]
+      - run: python -m sphinx -W -b html docs/ build/html/
+      - uses: actions/upload-pages-artifact@v1
+        with:
+          path: build/html
+
+  deploy:
+    needs: build
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/master'
+    steps:
+      - uses: actions/deploy-pages@v1

README.rst

@@ -0,0 +1,7 @@
+beanquery: Customizable lightweight SQL query tool
+==================================================
+
+beanquery is a customizable and extensible lightweight SQL query tool
+that works on tabular data, including `Beancount`__ ledger data.
+
+__ https://beancount.github.io/